package com.hx.haowumall.haowumallauthserver.controller;

import com.alibaba.fastjson.TypeReference;
import com.hx.common.constant.AuthServerConstant;
import com.hx.common.exception.BizCodeEnume;
import com.hx.common.utils.R;
import com.hx.common.vo.MemberRespVo;
import com.hx.haowumall.haowumallauthserver.vo.UserLoginVo;
import com.hx.haowumall.haowumallmember.vo.MemberLoginVo;
import com.hx.haowumall.haowumallauthserver.feign.MemberFeignService;
import com.hx.haowumall.haowumallauthserver.feign.ThirdPartyFeignService;
import com.hx.haowumall.haowumallauthserver.vo.UserRegistVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;


@Controller
public class LoginController {

    @Autowired
    ThirdPartyFeignService thirdPartyFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeignService memberFeignService;


    /**
     *springMVC viewController: 将请求和页面映射过来
     * */
//    @GetMapping("/login.html")
//    public String loginPage(){
//        return "login";
//    }
//
//    @GetMapping("/reg.html")
//    public String regPage(){
//        return "reg";
//    }

    @ResponseBody
    @GetMapping("/asms/sendcode")
    public R sendCode(@RequestParam("phone") String phone) {

        //TODO 1、接口防刷

        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);

        if (!StringUtils.isEmpty(redisCode)){
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l <60000){
                //60秒内不能再发
                return  R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(), BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }


        //2、校验码再次校验 redis:key-phone  value-code
        String code = UUID.randomUUID().toString().substring(0, 5);
        String tempCode = code +"_"+System.currentTimeMillis();
        //reids缓存验证码，防止60秒内再次发送验证码
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,tempCode,10, TimeUnit.MINUTES);

        thirdPartyFeignService.sendCode(phone,code);

        return R.ok();
    }


    /**
     *  //TODO 重定向携带数据，利用session原理 将数据放在session中。只要跳转下一个页面取出数据就会删掉session里的数据
     *  //TODO 1、将要解决分布式session的问题
     * RedirectAttributes redirectAttributes：模拟重定向携带数据
     *
     * */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes) {
        if (result.hasErrors()){
            /**
             * HashMap<String, String> errors = new HashMap<>();
             * .map(fieldError -> {
             *                 String field = fieldError.getField();
             *                 String defaultMessage = fieldError.getDefaultMessage();
             *                 errors.put(field,defaultMessage);
             *             })
             *
             *    fieldError -> {
             *                 return fieldError.getField();
             *             }
             * */
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(
                    FieldError::getField, fieldError -> {
                return fieldError.getDefaultMessage();
            }));
//            model.addAttribute("errors",errors);
            redirectAttributes.addFlashAttribute("errors",errors);
            //(重要)Request method 'POST' not supported
            //用户注册﹣>/regist[post]----》转发/reg.html（路径映射默认都是get方式访问的。)

            //(转发)"forward:/reg.html"
            //重定向有一个数据无法携带的问题，（数据在请求域可以携带）
            return "redirect:http://auth.haowumall.com/reg.html";
        }

        //1、校验验证码
        String code = vo.getCode();

        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(s)){
            if (code.equals(s.split("_")[0])){
                //删除验证码,令牌机制
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                //验证码通过 //真正的注册，调用远程服务进行注册
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0){
                    //成功

                    //注册成功回到首页，回到登录界面(重定向) *要加前置域名要不访问不到nginx*
                    return "redirect:http://auth.haowumall.com/login.html";

                }else {
                    HashMap<String, String> errors = new HashMap<>();
                    errors.put("msg", r.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors", errors);
                    return "redirect:http://auth.haowumall.com/reg.html";
                }

            }else {
                //重定向有一个数据无法携带的问题，（数据在请求域可以携带）
                HashMap<String, String> errors = new HashMap<>();
                errors.put("code", "验证码校验错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.haowumall.com/reg.html";
            }
        }else {
            //重定向有一个数据无法携带的问题，（数据在请求域可以携带）
            HashMap<String, String> errors = new HashMap<>();
            errors.put("code","验证码已失效");
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.haowumall.com/reg.html";
        }
//        //注册成功回到首页，回到登录界面(重定向)
//        return "redirect:/login.html";

    }


//    @GetMapping(value = "/login.html")
//    public String loginPage(HttpSession session) {
//
//        //从session先取出来用户的信息，判断用户是否已经登录过了
//        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
//        //如果用户没登录那就跳转到登录页面
//        if (attribute == null) {
//            return "login";
//        } else {
//            return "redirect:http://haowumall.com";
//        }
//
//    }


    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session){

        //远程登录
        R login = memberFeignService.login(vo);
        if (login.getCode() == 0){
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://haowumall.com";
        }else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.haowumall.com/login.html";
        }


    }



}

